<insert id="insertBatch" parameterType="java.util.List">
insert into SYS_ROLE2FUNCTION (ID,FUNCTIONID, ROLEID)
<foreach collection="list" item="item" index="index"
separator=" UNION ALL ">
SELECT #{item.id,jdbcType=DECIMAL},#{item.functionid,jdbcType=DECIMAL}, #{item.roleid,jdbcType=DECIMAL} FROM DUAL
</foreach>
</insert>